"I didn't deserve it," he tells the mag about the song, which was on her 2010 album, Speak Now. "I'm pretty good at taking accountability now, and I never did anything to deserve that. It was a really lousy thing for her to do."

The two were rumored to be an item in late 2009 after she supposedly split from Taylor Lautner. Mayer, meanwhile, was on the rebound from his tempestuous romance with Jennifer Aniston.

"I never got an e-mail, I never got a phone call," he says about Swift's bitter ditty, which includes lyrics like "Don't you think 19 is too young to be played by your dark twisted games."

"I was really caught off-guard," he explains, "and it really humiliated me at a time when I'd already been dressed down. I mean, how would you feel if, at the lowest you've ever been, someone kicked you even lower?"

Mayer also look potshots at Swift's songwriting prowess, sniffing, "I will say as a songwriter that I think it's kind of cheap songwriting,"

He adds, "I know she's the biggest thing in the world, and I'm not trying to sink anybody's ship, but I think it's abusing your talent to rub your hands together and go, 'Wait till he gets a load of this!' That's bulls--t."